WASHER GP-WINDSHIELD 6C8889 - Caterpillar

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Loosen jam nut (2) up to the stop. Loosen tensioner (3) up to stop. This will relieve the tension from the track.
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Use Tooling (B) to remove snap ring (4), dust cap (5), lock nut (6), washer (7) and bearing (8).
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Use a suitable lifting device to support track (9). Install Tooling (D) on the spindle. Apply Tooling (C) to idler (10). Remove inner (not shown) and outer idler wheels (10). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 180-3033 Stands 4
B 1P-1861 Retaining Ring Pliers 1
C 207-1600 Rubber Lubricant 1
D 224-9415 Kit
(The Kit includes the Cap and the Installation Tool.) 1
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Apply Tooling (C) to inner (not shown) and outer idler wheels (10). Use a suitable lifting device to position track (9) out of the way. Use Tooling (D) to install the inner (not shown) and outer idler wheels (10) and track (9). Remove Tooling (D).
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Install wheel bearing (8), washer (7), and a new locknut (6). Torque the locknut to 168 30 N m (124 22 lb ft).
Install dust cap (5). Use Tooling (B) to install retaining ring (4). Repeat step for the inner and outer idler wheels.
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Remove Tooling (A) and use the following steps to adjust the track (1) tension.
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Loosen jam nut (2). Turn adjuster (3) in order to tighten the track.
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Place a 45 kg (100 lb) weight between the drive sprocket and the idlers. Place a straight edge across the drive sprocket and idlers. Measure the track sag between the bottom of the straight edge and the top of the track. Turn adjuster (3) in order to tighten the track. The track sag should be between 9 mm (0.35 inch).
Tighten the jam nut (2) to the following torque, 270 40 N m (199 30 lb ft). Track tension for the 247 and 257 machines should be set between 12 mm (0.47 inch) and 9 mm (0.35 inch) of sag. Track tension is set to 12 mm (0.47 inch) from the factory. For typical applications, 9 mm (0.35 inch) of sag is acceptable. Periodic adjustment of the track tension is necessary in order to avoid damage to the tracks. If a track is too loose, the track will be more likely to come off the machine.
Do not overtighten the tracks. Tracks that are too tight can cause premature failure of the tracks. Tracks that are too tight can cause power loss and bearing failures.